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New Damage-Less Patterning Method of A GaAs Oxide Mask and Its Application to Selective Growth by Mombe

Published online by Cambridge University Press:  22 February 2011

Seikoh Yoshida  and
Masahiro Sasaki
Seikoh Yoshida
Affiliation:
Optoelectronics Technology Research Laboratory 5-5 Tohkodai, Tsukuba, Ibaraki 300-26, Japan
Masahiro Sasaki
Affiliation:
Optoelectronics Technology Research Laboratory 5-5 Tohkodai, Tsukuba, Ibaraki 300-26, Japan
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Abstract

A new damage-less patterning method of the photo-oxidized GaAs mask used for the selective-area growth of GaAs has been developed. We have found a new characteristic of the GaAs oxide: a metal Ga deposition onto the GaAs oxide surface lowers the desorption temperature of the oxide. The patterning method employed is based upon this characteristic. The GaAs oxide where 15 atomic layers (ALs) of Ga is deposited is locally removed at 540°C to form an opening area in the oxide mask. After forming this opening area, GaAs is selectively grown there by metal-organic molecular beam epitaxy (MOMBE).

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 334: Symposium W – Gas-Phase and Surface Chemistry in Electronic Materials Processing , 1993 , 513
Copyright
Copyright © Materials Research Society 1994

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References

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